Complete
00:00:00
1 8 10 12 19 21 2 18 3 13 15 4 9 16 5 14 6 17 20 7 11
  1. 1a Instinctive response to a sudden threat (5,2,6)
  2. 8a Probabilities (4)
  3. 9a Dreadful (8)
  4. 10a Speed up (10)
  5. 12a Voters (anag) — made every effort (6)
  6. 14a Grave (6)
  7. 15a Incorrect (10)
  8. 19a Not in any way restrained (8)
  9. 20a Feeling in need of an aspirin? (4)
  10. 21a Christian Science movement founder (4,5,4)
  11. 2d Show (8)
  12. 3d Possible cause of careless mistakes? (5)
  13. 4d Lewd (7)
  14. 5d __ MacDonald, heroine of the 1745 Jacobite rising (5)
  15. 6d Old school desk feature (7)
  16. 7d Attila's people (4)
  17. 11d Waylaid (8)
  18. 13d Not working (3,4)
  19. 14d Bind tight with clothes (7)
  20. 16d Sign of the scales (5)
  21. 17d Likeness (5)
  22. 18d Palindromic girl's name (4)